Massey Ferguson E9081 – Engine Control Unit (ECU) / Electronic Engine Management (EEM): Camshaft Speed Sensor

The system is unable to detect a valid signal from the camshaft sensor, meaning the signal is either missing, invalid, or the sensor is reverse-connected.

• 4700 series (4707, 4708, 4709, 4710)
• T4 models (2015-2021)
• 5400 series
• 6100 series
• 6400 series
• 7400 series
• 7600 series
• 8400 series
• 8600 series
• 7256
• MF 9305

1. 1

   Check the sensor wiring harness for defects, specifically looking for reversed signal lines, open circuits, or shorts

2. 2

   Inspect the camshaft trigger wheel for physical defects or damage

3. 3

   Test operation by temporarily installing a known-good camshaft speed sensor to determine if the original sensor is defective

1. 1

   Locate

   Locate the camshaft speed sensor on the engine block/front cover.

2. 2

   Disconnect

   Carefully unplug the electronic engine management connector from the sensor.

3. 3

   Remove

   Remove the retaining fastener. (Note: OEM torque specifications for speed sensors on these engine covers are typically an M6 bolt torqued to 8 ± 2 Nm / 5.9 ± 1.47 lb-ft).

4. 4

   Inspect

   Pull the sensor out and visually inspect the trigger wheel through the mounting port.

5. 5

   Install

   Insert the replacement camshaft speed sensor and secure it with the fastener, adhering strictly to the torque wrench settings specified.

6. 6

   Reconnect

   Reconnect the wiring harness, turn on the machine, and use the WinEEM3s/EEM4 Service Tool to clear the stored fault code and verify that the warning lamp deactivates.